New in version 3.13.
Add options to the link step for executable, shared library or module library targets in the current directory and below that are added after this command is invoked.
This command can be used to add any link options, but alternative commands exist to add libraries (target_link_libraries() or link_libraries()). See documentation of the directory and target
This command cannot be used to add options for static library targets, since they do not use a linker. To add archiver or MSVC librarian flags, see the STATIC_LIBRARY_OPTIONS target property.
add_link_options may use "generator expressions" with the syntax
$<...>. See the cmake-generator-expressions(7) manual for available expressions. See the cmake-buildsystem(7) manual for more on defining buildsystem properties.
Host And Device Specific Link Options
New in version 3.18: When a device link step is involved, which is controlled by CUDA_SEPARABLE_COMPILATION and CUDA_RESOLVE_DEVICE_SYMBOLS properties and policy CMP0105, the raw options will be delivered to the host and device link steps (wrapped in
-Xcompiler or equivalent for device link). Options wrapped with
$<DEVICE_LINK:...> generator expression will be used only for the device link step. Options wrapped with
$<HOST_LINK:...> generator expression will be used only for the host link step.
The final set of options used for a target is constructed by accumulating options from the current target and the usage requirements of its dependencies. The set of options is de-duplicated to avoid repetition.
New in version 3.12: While beneficial for individual options, the de-duplication step can break up option groups. For example,
-option A -option B becomes
-option A B. One may specify a group of options using shell-like quoting along with a
SHELL: prefix. The
SHELL: prefix is dropped, and the rest of the option string is parsed using the separate_arguments()
UNIX_COMMAND mode. For example,
"SHELL:-option A" "SHELL:-option B" becomes
-option A -option B.
Handling Compiler Driver Differences
To pass options to the linker tool, each compiler driver has its own syntax. The
LINKER: prefix and
, separator can be used to specify, in a portable way, options to pass to the linker tool.
LINKER: is replaced by the appropriate driver option and
, by the appropriate driver separator. The driver prefix and driver separator are given by the values of the CMAKE__LINKER_WRAPPER_FLAG and CMAKE__LINKER_WRAPPER_FLAG_SEP variables.
-Xlinker -z -Xlinker defs for
LINKER: prefix can be specified as part of a
SHELL: prefix expression.
LINKER: prefix supports, as an alternative syntax, specification of arguments using the
SHELL: prefix and space as separator. The previous example then becomes
SHELL: prefix anywhere other than at the beginning of the
LINKER: prefix is not supported.
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